Need advice with power consumption (TinyRex Solo)

[eugene128]

Hello.

We noted that in accordination with datasheet TinyRex Solo requires 3W on peak (without GPU).

However in PCB it requires 3 different power sources (transformed from 5V5 level): 5V 1.5A + 3V3 2A + 2V5 0,35A

If we understand right it requires 5V5 4A = 22W (from baseboard to module).

For what other 19W ?
Is it uses to supply GPU and USB devices?

We need to get some clarification for this.


Thanks!

[Lakshmi]

Hi,
When you say 5V 1.5A,3V2A etc Are you referring the Switching/LDO Regulator's specification? If possible add an image where it's mentioned so.

Thanks.

[eugene128]

Hello, Lakshmi.
No, we are referring the TinyRex's scheme. We are looking at the labels "DESIGN NOTE" (at the top-right corner) of each power connection.

Sure, I've attached TinyRex's requirements (pdf file)

[Lakshmi]

Hey,
Please go through this:

https://www.imx6rex.com/2015/07/imx6-tiny-rex-power-consumption/

It's said that power consumption for single thread cpu and 1 memory.
That doesn't mean that design has to be min. power consumption. You need to look at part/IC's datasheet n should calculate the current consumption

[eugene128]

Hey,
Please go through this:

https://www.imx6rex.com/2015/07/imx6-tiny-rex-power-consumption/

It's said that power consumption for single thread cpu and 1 memory.
That doesn't mean that design has to be min. power consumption. You need to look at part/IC's datasheet n should calculate the current consumption

It's clear
Thank you for advice!

[robertferanec]

Do not forget, power supply has to be able to deliver the peak currents which are usually much higher than continuous currents. So I would not just add the numbers, that is not an accurate calculation.

This may help you: https://www.imx6rex.com/2015/07/imx6...r-consumption/